Center-bearing.



` zen of the United UNITED sTATEs cnnnLEs DIETz, or cnicnoo, ILLINOIS, nlssmnon oroNE-ALLTO Pimms. mennen OF CHICAGO, ILLINOIS; MYRA IIIFYLZ.ADMINIS'IIRA'IB'IXOIE"SAID) GABLEB DIETZ,

DECEASED.

CENTER-BEARING.

Specicatinn of Letters Patent.

To all whom t may concern.'

Beit known that I CHARLES DiETz, a citi- States, residing at Chicago, inthe county of Gooli and State of Illinois, have invented certain new4 anduseful VImprovements in Center-Bearings, of which the following is a specification.4

This invention relates to center bearings, and in particular to center bearings adapted" for use with railway cars and the like.

The principal object olf the invention is toiprovide an improved center bearing con struction whereby the truck and body bolsters are united in an improvedinanner, so

that transverse stresses on the bolster pin or king-bolt are largely removed. The invention com rises a truck bolster plate and a bodybp ster plate having coacting parts through, Which horizontally acting forcesare transmitted, and by which the stress on the central axial pin is relieved. My invention4 also comprises improved meansor preventing vertical displacement of the truck and body holsters Within the usual working limits of angular movement thereof, While permitting relative vertical displacement when the holsters are moved relatively to each other beyond the usual Working limits of angular` movement. ,A further object relates to .improved means for detachably securing the truck bolster plate to the truck bolster. v

These and other objects of the invention will appear more clearly in 'the following `specification .taken in connection with the accompanying drawings, iii which two` embodiinents of the invention are illustrated. In the drawings;

Figure 1 shows a side elevation of my im. roved center b aring, illustratin the enijodiinent thereo with va cast bo ster con'-` struction "Fig 2 shows a` central' vertical section taken on the lineQ-f-Q of Fig. 1;

Fig; 3 shows a top plan view of the truck vplatein position on thetruck bolster bolster Fig. 4 shows an inverted plan viewj of the `body bolster plate YSinni-eid to the body bols,

sterf i Fig. 5 shows a side elevationl of-another form of my improved center bearingas embodied'in' a built up bolster construction;

Fig. 6 shows la central. vertical section 4taken on the line fil-6 ofFig.- 5";

Fig: 7 shows aplanl view of theibolster plate illustrated in Figs. 5 and 6; and Fig. 8 showsaninverted plan view of: the truck bolster plate 'shown in Figs. 5 and.

Patented Ahg'.=eo, 1591s.

In the form of my invention illustratedl in Figs. to 4 inclusive, the truck bolster 10v is .formed integrally by casting' yorthe like,4

and comprises side plates 10* andthe upper horizontally extending plate 10". Located above the truck. bolster is the body bolster lil which is also formed integrally, es by'cast ingy or the like, and which comprises the ver.

ticallyextending plates 11a and horizontally extending plates 1lb and 11. @it Will be seen that 'the horiontally extending plates of the body bolster extend beyond the vertically extending plates 11a-so as to'forni lateral y projectingfianges 11d.

Seated upon the truck agev theA vertibolster the truck bolster plate 12 Whih comprises OP' 75 bolster plate longitudinallyfoftlie truck bol Vertical movement offthe truck bols-'ter plate with respect to the truck bolster is Y prevented by the horizontal pi'n onbolt 1,4

which extendsthrough apertures formed in the vdownwardly extending flanges 13 and through alinin apertures in theplates 10 of thetruck bester. A washer 15 is placed Yupon the end ofthe pin 14 and the same is 1 secured inpositionl by means of a VCotter pin 16 or the like.

@formed inte rally with or passin through the truc bolsterplate and exten ing upwardly from the central portion .theres l of is the king bolt or bolster pin 17 which is cylindrical in form and which serves as an -a-xis about which the truck bolster turns. ,An upwardl 'extending annular shoulder or `sleeve' 18 is orined on the truck bolster plate concentrically with the bolster pin 17, 4thns forming a .depression around the bolster pin which acts as a seat for' a complementary I Bart carried by thebody bolster. The truck olster plate lalso comprises diametrically pposed upwardly turned hooked lugs or Jaws 20 which areloeated in a plane transveisely'tothe `longitudinal axis of the truck bolster and which terminate in inwardly directed flanges 20 adapted to prevent vertical displacement of the body bolster. The jaws' 2O are reinforced by webs 21.

Secured to" the 'flanges 111 vof the body bolster, as by rivets or the like, or formed integrally therewith, is the body bolster i plate 25 which 'is adapted to coact with the through the coacting vsurfacefs of the shoultruck bolster plate above described. The 1'5 body bolster plate Vcomprises a circular downwardly extending lpart 26 which 1s adapted to seat within the. depression vformed.within the annular shoulder 18 carriedb the truck bolster plate. Centrally 0.

locate in the circular ai't26 ofthe body 'bolster plate is a cylin rical depression 2 which 4is adapted. to be engaged by and which serves as 'a bearing for the bolster pin 17@ The lateral substantially vertically extending surfaces of the cylindrical part 28 are' kadapted to coact with the corresponding 4sii-b stanti'ally vertical surfaces on the inner -side-of the annular shoulder 18' so that 1n operation horizontally acting v forces are transmitted. from one bolsteizto the other der `18 and part 2 6 whereby'the stresses on the bolster pin 17 areflargely removed and the' shearing off cfg-said pin is thereby prefvented.Y The annular coacting surfaces of the shoulder 18 and part '26 are preferably -somewhat inclined with respect to the vertical plane so as to permital ready engagementfand disengagement of those parts and a slight clearance is left between the LoafEJ ing surfaces, as 'shown inthe drawings, to

recei've`oilor other lubricant.

.Formed 4integrally with'the' body bolster plate 2 5 are the outwardly extending horizontal flanges 28 4which are diametricall opposed in a plane transverse to the longitudinal axis, of' the body `r bolster. 'lhesel V-ilanges are arcuate in form andere oifset downwardly, being adapted to 'pass beneath the inwardlyextending ilangesyQO*1 of the hooked jaws C O-carried by the truck bolster p1ate. It will be seen that'the upper sur,-

'faces of the flanges 28 are adapted to engage the anges. 20 'of the -Jaws 20 and' thereby prevent relative vertical displacement ofthe bolsters. The flanges 28 are of suchlength as to prevent reiative vertical displacement of the holsters within the usual working limits of angular movement ofthe holsters with respect to each other, but b turning the bolster plates relatively to eac other," throughan increased angle, it will be seen that theanges 28 will pass out' of eriv -agement with the jaws 2O so as fopermit the removal .f the bodyfbolster from its position on the truck bolster` The degree of I angular movementv which is necessary to permit such relative .displacement of the triickjand body bolsteis will dependupon the relative proportions of the jaws20 and flanges 28 which proportions may be varied,

as desired, to conform to the conditions which are bein 4met with in practice. It will be seen that a ter withdrawing the horizontal Jin 14 to' release the truck bolster ,12 rom its seat on thetruck bolster, the

truck bolster plate may be turned angularly -until the flanges 28 pass out of engagement with the anges 20a, after which the truck bolster plate may be lowered from its seat for inspection or repairs.

plate In the embodiment of my invention-shown in Figs. 5 to V8 inclusive, the truck and body bblsters are shown as being built'up from sections of metal which are united by rivets, or the like. In this construction the truck bolster comprises the bolster beam 30 which 'is preferably of channel form, and which is arched upwardly as shown .in the drawings. Seated within the truck bolster beam 30 at its central point, and closely engaging the downwardly extending flanges thereof is the strut or'block 31, the lower end of which is engaged by the bolster tierod 32. The usual s pring plank 33 passes beneath the tie-rod 32.

Seated upon the truckbolsterbeam. 30 is the truck bolster vplate 34 which carries a 'I central bolster pin` 35 and an annular shoulder 36 concentric therewith which partsare A similar to those previously described in connection with the otherembodiment of my wardly'extending vflanges of the bea-m 30; Av

washer 40 engages the end 4ofthe bolt 39 and the. latter is secured in position by means of a vcotter pin4 41 or by other similar fastening means, It will be seen that byeE this construction the bolster plate 34 is 'prevented from moving/ horizontally or ver'- the 'parts are further secured againstrelative movement by means of the downii'rardly extending lugor pin '42 which is formedintegrall f with the plate 3ft-inl alinement with the bo ster pin 35 and'which engages alin ing apertures formed in the horizontally ex- 120 tically with respect to the truck bolster, but

tending part ofthe beam`30- and through v the adjacent 'partof the strut 3L In. this embodiment of my invention the 1- 811 images cured to the lower pla-te @t7 of the body bolster 45 is the body bolster plate 51 having dianietrically disposed ,arcuate langes 52, a central depression 53 adapted to receive the bolster pin 3o, and, adoiviiiifardly extending part 54 adapted to' seat 'within the depres- Vsion formed Within the annular shoulder guiar dist-ance, while These parts are similar to and. operate in same manner the cerresponding parts da scribed in connect-ion with the form et' my invention shown in lligs. l to fl, inclusive.

It will be seen that with either forni of my invention the body holsters may be rear Aily separated from each othe when desired nierelgi" by displacing the lholsters with re--i spect to each other tlii'oi 'l ical d lacenieiit of the bolsters with resi'icct to eac.i other prevented when the car is in operation virtue of the interengaging .flanges ca by the bolster pla tes. .lt will also be 'ii-nderstood that the'center pin or hing bolt may be omitted if desired, in which case the holsters will turn relatively te each other about; the interlocking' sleeves or shoulders through 'which forces are transmitted from one bolster to the other. lt will be seen that my improved. construction provides a rela-- tively large bearing area and a llrin and steady connection. is formed between the holsters so that shocks and other unsatisfactory? features are eliminated.

VVhileI have shown and described tivo particiilar foin'is which my invention may take, it will be understood that the principles of the invention may be embodied vin various other structures without departing from the scope of the invention as' delined in the appended claims.

VVha-t l clain'i is:

1. In a device ofthe class described, a truck bolster, a body bolster, a truck bolster plate, downwardly extending flanges on sai l truck bolster plate adapted to engage the opposite sides of said triicli' bolster, a pin passing through said flanges andsaid triielr bolster, lugs projecting from said truck bolster at opposite ends of said flanges, s ed means for operatively connecting said triiclr -bolster plate and said body bolster.

In ii device of the class described, truck bolster, a bodji bolster, a truck bolster plate seated on said truck bolster, anges extending downiiardly from said truck bolster the required air plate and engaging tlieopposite sides.- of said. truck bolster, a pin extending throng said flanges and said truck bolster to prevent Yen tical displacement ot said truck bolsterplate,

adiilitional means to i'irevent" vertical displacement of said truck bolster plate with respect to said truck bolster, and means', ffdr operatively' eoiniecting' said truck bolster .plate and said body belster. 4

3. ,[n a device of the class described, a truck bolster, a body bolster, a truck bolster plate seated on said truck bolster and haring flanges extending i'lnirnivai'dly at. opposite sides thereof, hooked lita-'f Carried by said truck bolster at opposite sides of saidflanges, and means engaging said hooked .lugs for operatively connecting said truck bolster plate and said body bolster.

4.-.` lfn a device of tlieclass described, a liolster, a bolster i:ilate seated on saiifl bolster and having transversely extenriling flanges at opposite sides of said bolster, a pin ew tending transversely through said flanges and said bolster, and hooked lugs carried by and extending outwardly from said bolster at each side o'l.saidflanges.

5. ln .a device ot `the class described, a bidsi'geig a bolster plate seated thereon and lia flanges extending doWnii-aidli' at caen ide thereof. a pin extending trans` versely through said flanges and through said bolster, and a lug extending downwardly :troni said bolster plate, said bolster said body bolster plate haring oppositelyy disposed' arcuate flanges extending downiiardly outwardly of said flange on said tru'clr bolster plate, horizont-ally extei'idiilg arcuate flanges projecting outwardly from said last mentioned ,flanges of said body bol er plate, and eppcsitely disposed hooked i: s zarried by said truck bolster plate and arranged to receive said horizontal arcuate flanges df said bodi7 bolster plate.

ln testii'noiiy Whereoi, l have subscribed my naine.

' CHARLES DIETZ'. 

